A Flood Alert was issued for Ravensbourne area in the London Boroughs of Lewisham, Bromley, Greenwich and Croydon in Bromley, Croydon, Greater London, Greenwich, Lewisham on 27th August 2026. Affected watercourses included the River Ravensbourne.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Ravensbourne at Bishops Avenue rose 0.50m, peaking at 1.03m, while the River Ravensbourne at Catford Hill climbed 0.43m.
Environment Agency advice issued
High river levels this morning may lead to flooding. Flooding is still possible on 27 August 2026 from 5am to 5pm. Locations most affected will be low lying land and roads near rivers. We are closely monitoring the situation. Take care and avoid walking, cycling or driving through flood water. This message will be updated by 5pm on 27 August 2026 or as the situation changes.
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Bishops Avenue | River Ravensbourne | +0.50m | 1.03m |
| Catford Hill | River Ravensbourne | +0.43m | 0.48m |
| Bromley South | River Ravensbourne | +0.36m | 0.40m |
| Bromley | River Ravensbourne | +0.33m | 0.36m |
| Beckenham Park | River Ravensbourne | +0.33m | 0.83m |
| Beckenham | The Beck | +0.28m | 0.74m |
| Chinbrook Park | River Quaggy | +0.18m | 0.19m |
| Downham Lane | Spring Brook | +0.16m | -27.51m |
| Magpie Hall Lane | River Ravensbourne | +0.14m | 1.12m |